523232240 has 40 divisors (see below), whose sum is σ = 1219795440. Its totient is φ = 208728576.

The previous prime is 523232233. The next prime is 523232243. The reversal of 523232240 is 42232325.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523232243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21692 + ... + 38948.

It is an arithmetic number, because the mean of its divisors is an integer number (30494886).

Almost surely, 2^523232240 is an apocalyptic number.

It is an amenable number.

523232240 is an abundant number, since it is smaller than the sum of its proper divisors (696563200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523232240 is a wasteful number, since it uses less digits than its factorization.

523232240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17649 (or 17643 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 523232240 is about 22874.2702615843. The cubic root of 523232240 is about 805.8078589338.

Adding to 523232240 its reverse (42232325), we get a palindrome (565464565).

The spelling of 523232240 in words is "five hundred twenty-three million, two hundred thirty-two thousand, two hundred forty".